掺TiO_2玻璃粉对玻璃离子水门汀性能的影响
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摘要
采用不同TiO_2掺杂量(0、0. 5%、1%、3%和5%)制备的玻璃粉与聚丙烯酸制得玻璃离子水门汀(GIC),以及将含3%TiO_2玻璃粉经不同温度(400℃、500℃、600℃和700℃)热处理后制得玻璃离子水门汀,测试GIC的固化时间和抗压强度。并使用DSC、XRD、SEM以及粒径分析仪,研究玻璃粉体热处理前后的结晶特性、玻璃转变和结构特征。结果表明,晶核剂TiO_2的掺入使玻璃的结构致密性增强,不仅延长了玻璃离子水门汀的固化时间,而且明显提高GIC的抗压强度;热处理后的玻璃粉会发生团聚和结块现象,600℃以上时会有Ca F2晶体析出。此外,玻璃粉经热处理后可以明显延长GIC的固化时间,然而过高温度的热处理改变玻璃颗粒表面形态,降低GIC的机械强度。
Glass ionomer cement( GIC) was prepared by using glass powders doped by different amount of TiO_2( 0,0. 5%,1%,3% and 5%) and polyacrylic acid,and powders containing 3% TiO_2 was used to make glass ionomer cement after heating treatment by different temperature( 400 ℃,500 ℃,600 ℃and 700 ℃). Setting time and compressive strength of the GIC was tested. Besides,using DSC,XRD,SEM and particle size analyzer,the crystallization,glass transformation and structural characteristics of glass powder before and after thermal treatment were studied. The results show that the incorporation of crystal nucleating agent TiO_2 enhances the compactness of glass structure,it not only prolonges the setting of glass ionomer cement,but also significantly increases the compressive strength of GIC. Glass beads reunion phenomenon happens after heat treatment,with the generating of CaF2 crystal above 600 ℃. In addition,the setting time of GIC can be significantly prolonged after the treatment of glass powder.However,the higher heat treatment temperature will change the surface morphology of glass particles and reduce the mechanical strength of GIC seriously.
Glass ionomer cement( GIC) was prepared by using glass powders doped by different amount of TiO_2( 0,0. 5%,1%,3% and 5%) and polyacrylic acid,and powders containing 3% TiO_2 was used to make glass ionomer cement after heating treatment by different temperature( 400 ℃,500 ℃,600 ℃and 700 ℃). Setting time and compressive strength of the GIC was tested. Besides,using DSC,XRD,SEM and particle size analyzer,the crystallization,glass transformation and structural characteristics of glass powder before and after thermal treatment were studied. The results show that the incorporation of crystal nucleating agent TiO_2 enhances the compactness of glass structure,it not only prolonges the setting of glass ionomer cement,but also significantly increases the compressive strength of GIC. Glass beads reunion phenomenon happens after heat treatment,with the generating of CaF2 crystal above 600 ℃. In addition,the setting time of GIC can be significantly prolonged after the treatment of glass powder.However,the higher heat treatment temperature will change the surface morphology of glass particles and reduce the mechanical strength of GIC seriously.
引文
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[12] Ghasemi A,Penther D,Kamrani S. Microstructure and nanoindentation analysis of Mg-SiC nanocomposite powders synthesized by mechanical milling[J]. Materials Characterization,2018,142:137-143.
[13]高任,王焕平,朱钦恭,等. Ti O2掺杂对SiO2-Al2O3-Mg O系玻璃结构和力学性能的影响[J].复合材料学报,2017,34(3):638-645.
[14]吴志凯,江五贵,郑隆.界面对双向纤维增强复合材料力学性能的影响[J].复合材料学报,2017,34(1):217-223.
[15]秦媛,骞少阳,程金树,等. Cr2O3及Ti O2对CaO-MgO-Al2O3-SiO2微晶玻璃着色及析晶的影响[J].硅酸盐通报,2016,35(5):1333-1337.
[16] Moshaverinia A,Roohpour N,Chee W W L,et al. A review of powder modifications in conventional glass-ionomer dental cements[J]. Mater.Chem.,2011,21:1319-1328.
[17] Abo-Mosallam H A,Park H C. Crystallization characteristics of La2O3-containing glasses for glass ionomer cement[J]. Materials Letters,2012,72:137-140.
[18] Gu Y W. Heat treatment and thermally induced crystallization of glass for glass ionomer cement[J]. Thermochemica Acta,2004,423:107-112.
[2] Maryam K,Fateme K. A review of glass-ionomers:from conventional glass-ionomer to bioactive glass-ionomer[J]. Dental Research Journal,2013,10(4):411-420.
[3] Baig M S,Fleming G J P. Conventional glass-ionomer materials:a review of the developments in glass powder,polyacid liquid and the strategies of reinforcement[J]. Journal of Dentistry,2015,43(8):897-912.
[4] Ali A N E,Young A M. Setting kinetics and mechanical properties of flax fiber reinforced glass ionomer restorative materials[J]. The Journal of Biomedical Research,2017,31(3):264-272.
[5] Silva R M,Santos P H N,Souza J N,et al. Effects of cellulose fibers on the physical and chemical properties of glass ionomer dental restorative materials[J]. Materials Research Bulletin,2013,48(1):118-126.
[6] Mukherjee D P,Das S K. The influence of Ti O2content on the properties of glass ceramics:crystallization,microstructure and hardness[J].Ceramics International,2014,40(3):4127-4134.
[7] Fathi H M,Johnson A. The effect of Ti O2concentration on properties of apatite-muliite glass-ceramics for dental use[J]. Dental Materials,2015,32(2):311-322.
[8] Elsaka S E,Hamouda I M,Swain M V. Titanium dioxide nanoparticles addition to a conventional glass-ionomer restorative:influence on physical and antibacterial properties[J]. Journal of Dentistry,2011,39(9):589-598.
[9]董波,王美玲,谷巍,等.载银纳米二氧化钛对玻璃离子水门汀抑菌性的影响[J].口腔医学研究,2016,32(4):335-337.
[10]陈培,王海风,李浩业. SiO2-Al2O3-CaO-MgO高强度玻璃纤维掺杂Ti O2的结构性能研究[J].玻璃与搪瓷,2016,44(1):5-13.
[11] Abo-Mosallam H A,Kim D A,Kim H W,et al. Influence of Zr O2oxide on the properties and crystallization of calcium fluoro-alumino-silicate glasses[J]. Ceramics International,2016,42(4):5107-5112.
[12] Ghasemi A,Penther D,Kamrani S. Microstructure and nanoindentation analysis of Mg-SiC nanocomposite powders synthesized by mechanical milling[J]. Materials Characterization,2018,142:137-143.
[13]高任,王焕平,朱钦恭,等. Ti O2掺杂对SiO2-Al2O3-Mg O系玻璃结构和力学性能的影响[J].复合材料学报,2017,34(3):638-645.
[14]吴志凯,江五贵,郑隆.界面对双向纤维增强复合材料力学性能的影响[J].复合材料学报,2017,34(1):217-223.
[15]秦媛,骞少阳,程金树,等. Cr2O3及Ti O2对CaO-MgO-Al2O3-SiO2微晶玻璃着色及析晶的影响[J].硅酸盐通报,2016,35(5):1333-1337.
[16] Moshaverinia A,Roohpour N,Chee W W L,et al. A review of powder modifications in conventional glass-ionomer dental cements[J]. Mater.Chem.,2011,21:1319-1328.
[17] Abo-Mosallam H A,Park H C. Crystallization characteristics of La2O3-containing glasses for glass ionomer cement[J]. Materials Letters,2012,72:137-140.
[18] Gu Y W. Heat treatment and thermally induced crystallization of glass for glass ionomer cement[J]. Thermochemica Acta,2004,423:107-112.